Buying Guide

Best Calculators Under $20

Find calculators under $20 for students, school, office, basic math, scientific calculations and everyday use.

Guide Top Picks Comparison FAQs
Last Updated
2026-06-30
Top Picks Comparison FAQs
Guide Overview

Best Calculators Under $20 for School & Office | As-Mart

Shop calculators under $20 for school, office, home budgeting, student math and everyday calculations.

Top Picks

Compare each recommended product in a clear, full-width layout.

Buying Notes

Practical advice, key features, and important points to consider before buying.

Best Calculators Under $20

Calculators under $20 can be a smart choice for students, parents, teachers and office users who need useful features without a high price. Many basic calculators, pocket calculators, desktop calculators and some scientific calculators are available in this budget range.

Buying Tips

  • Match the class: Basic calculators work for simple math, while scientific calculators support algebra and science.
  • Check display size: A clear screen helps reduce errors.
  • Look for dual power: Solar and battery calculators are more reliable.
  • Read ratings: Choose budget calculators with strong customer feedback.

Frequently Asked Questions

Quick answers to common questions about this product category.

Yes, many basic, desktop and student scientific calculators are available under $20.

Yes, if the calculator meets the student's class requirements and has the needed functions.

Comparison Table

Image Model ASIN Brand Price Off Reviews Action
Texas Instruments TI-503 SV Standard Function Calculator Texas Instruments TI-503 SV Standard Function Calculator
4.6 (2987)
B00000JBNQ Texas Instruments $5.96
— 		— 2987
Details Amazon
Mr. Pen- Mechanical Switch Calculator, 12 Digit Large LCD Display | Purple with Big Buttons, Mechanical Switch Calculator for Home, School, Office Mr. Pen- Mechanical Switch Calculator, 12 Digit Large LCD Display | Purple with Big Buttons, Mechanical Switch Calculator for Home, School, Office
4.6 (3268)
B0CMT6F6WZ Mr. Pen $8.49
$9.99 		-15% 3268
Details Amazon
Casio SL-310SV, Sloar Powered Standard Function Calculator Casio SL-310SV, Sloar Powered Standard Function Calculator
4.6 (1023)
B01FXYHXDY Casio $8.95
— 		— 1023
Details Amazon
Sharp EL233SB Standard Function Calculator Sharp EL233SB Standard Function Calculator
4.5 (1218)
B0006HV4TS Sharp $8.99
— 		— 1218
Details Amazon
Texas Instruments TI-30Xa Scientific Calculator Texas Instruments TI-30Xa Scientific Calculator
4.7 (18308)
B00000JBNS Texas Instruments $9.97
$15 		-34% 18308
Details Amazon
Casio Inc. JF-100BM Standard Function Calculator, Multicolor, 4 1/4 x 6 7/8 Casio Inc. JF-100BM Standard Function Calculator, Multicolor, 4 1/4 x 6 7/8
4.6 (872)
B003827RSA Casio $9.99
$15.99 		-38% 872
Details Amazon
Cute Kids' Mini Calculator - 5.9 x 2.6in, LCD Display, Battery Powered (Included), Perfect for School Cute Kids' Mini Calculator - 5.9 x 2.6in, LCD Display, Battery Powered (Included), Perfect for School
4.0 (166)
B0CCJ8FKSS Holotioee $9.99
— 		— 166
Details Amazon
Scientific Calculators for Students, 240 Functions 2-Line Standard Scientific Calculator, Cute School Office Supplies, Math Calculator for School (Purple) Scientific Calculators for Students, 240 Functions 2-Line Standard Scientific Calculator, Cute School Office Supplies, Math Calculator for School (Purple)
4.7 (4)
B0FJ5MTGBK PUNGLTD $11.99
— 		— 4
Details Amazon
Scientific Calculator School Supplies, ROATEE 991MS 401 Functions 2-Line Display Desktop Calculator with Sliding Cover, Solar Battery Dual Power Kawaii for Middle High School Student and Teacher Blue Scientific Calculator School Supplies, ROATEE 991MS 401 Functions 2-Line Display Desktop Calculator with Sliding Cover, Solar Battery Dual Power Kawaii for Middle High School Student and Teacher Blue
4.5 (122)
B0CHVZKRVC ROATEE $12.99
— 		— 122
Details Amazon
Desk Calculator 12 Digit Extra Large LCD Display, Touch Comfortable with Big Buttons, PXY Two Way Power Battery and Solar Standard Function Office Calculators Desk Calculator 12 Digit Extra Large LCD Display, Touch Comfortable with Big Buttons, PXY Two Way Power Battery and Solar Standard Function Office Calculators
4.6 (2332)
B0B67QN29F pxy $13.59
$15.99 		-15% 2332
Details Amazon
Texas Instruments TI-30XIIS Scientific Calculator, Blue Texas Instruments TI-30XIIS Scientific Calculator, Blue
4.8 (50459)
B008HYSAF8 Texas Instruments $14.24
$17 		-16% 50459
Details Amazon
Scientific Calculator, w/Equation Recall, 3-1/5" x 6-1/10" x 3/4", Sold as 1 each Scientific Calculator, w/Equation Recall, 3-1/5" x 6-1/10" x 3/4", Sold as 1 each
4.5 (1682)
B0006I0ADS Texas Instruments $14.24
$17 		-16% 1682
Details Amazon